<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>Re: Sangler & Sohne Serial Seizing Centers</TITLE> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 5.50.4522.1801" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial>Hi Joseph,</FONT></DIV> <DIV><FONT face=Arial>Yamaha has a tool they use to centre the jack in = the window, to do this it bends the pin. It is used just in the wippens, as = far as I know.</FONT></DIV> <DIV><FONT face=Arial>Regards,</FONT></DIV> <DIV><FONT face=Arial size=2>John M. Ross<BR>Windsor, Nova Scotia, = Canada<BR><A href="mailto:piano.tech@ns.sympatico.ca">piano.tech@ns.sympatico.ca</A>= </FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A title=rufy@rcn.com href="mailto:rufy@rcn.com">rufy@rcn.com</A> = </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, May 18, 2001 2:33 = PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Sangler & = Sohne Serial Seizing Centers</DIV> <DIV><BR></DIV><BR>Dave, <BR><BR>This reminds me of experiences I've = had with some Yamahas (and possibly others). When I remove the centerpins I = find that they are bent. You replace with the same size or next size up and they = are free and remain so. I've wondered (as these are invariably original = pins, same size as all the others) if sometimes as an action is being assembled = in the factory, workers bend the pins to create alignment (squareness or = travel) in a part. Then in time, the pin moves slightly laterally or turns a bit as = it loosens in the wood and in its new configuaration causes the part to = seize. You try all the others, and they are fine; then a few months or a year = later a few new ones turn up tight.<BR><BR>Have you noticed if those pins were = bent??<BR><BR>Joseph = Giandalone,RPT<BR> <BR><BR>----------<BR>From: "Dave Bunch" <pdtek@home.com><BR>To: = <pianotech@ptg.org><BR>Subject: Sangler & Sohne Serial Seizing Centers<BR>Date: Fri, May 18, 2001, = 12:06 PM<BR><BR><BR> <BLOCKQUOTE><FONT size=2>I service a three year old Sangler & = Sohne in a nursing home. Among its many problems is that as time passes, the = centers start seizing up a few at a time. I mean they will be fine when I am = there tuning an a month later five whippen centers will be so tight you = can barely move the flange by hand! Protek won't touch it. I have to repin = them, check the rest of them. Everything is fine then I get a call a couple = months later and there are several new ones. Is glue leaching through the = bushings? Is there any solution besides repining the whole action? They would hit = the ceiling with that suggestion. Anyone else seen this?<BR></FONT> <BR><FONT size=2>Dave Bunch<BR></FONT> <BR></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>